CN113432237B - Method and device for judging refrigerant recovery completion condition and air conditioner - Google Patents
Method and device for judging refrigerant recovery completion condition and air conditioner Download PDFInfo
- Publication number
- CN113432237B CN113432237B CN202110778302.1A CN202110778302A CN113432237B CN 113432237 B CN113432237 B CN 113432237B CN 202110778302 A CN202110778302 A CN 202110778302A CN 113432237 B CN113432237 B CN 113432237B
- Authority
- CN
- China
- Prior art keywords
- real
- temperature
- refrigerant recovery
- time
- condition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B45/00—Arrangements for charging or discharging refrigerant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fluid Mechanics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a method and a device for judging the completion condition of refrigerant recovery and an air conditioner, and relates to the technical field of air conditioners. The judging method comprises the following steps: acquiring indoor environment temperature, and determining a first judgment condition and a second judgment condition according to the indoor environment temperature; acquiring the initial weight of the outdoor unit before the refrigerant recovery starts, and determining a third judgment condition according to the initial weight; acquiring an initial air outlet temperature of the indoor unit at the beginning of refrigerant recovery and a real-time air outlet temperature in the refrigerant recovery process; controlling the indoor unit to reduce the wind gear rotating speed under the condition that the indoor environment temperature, the initial air outlet temperature and the real-time air outlet temperature meet a first judgment condition; acquiring the real-time weight of the outdoor unit under the condition that the real-time air outlet temperature before and after the reduction of the wind shield rotating speed meets a second judgment condition; and under the condition that the real-time weight and the initial weight meet a third judgment condition, judging that the refrigerant recovery is finished. The judging method provided by the invention can accurately judge whether the refrigerant is recycled completely.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a method and a device for judging the completion condition of refrigerant recovery and an air conditioner.
Background
When the air conditioner is produced, a manufacturer can perform a test operation test on the air conditioner on a production line, after the test operation test is completed, the refrigerant needs to be recovered into an outdoor unit of the air conditioner, and the current production line mainly judges whether the refrigerant of the air conditioner is completely recovered into the outdoor unit in a pressure detection mode.
Since there are many refrigerants in the market, such as R410A, R32, R290, R22, etc., the recovery pressures corresponding to different refrigerants are different, and the pressure detection method is easy to misjudge.
Disclosure of Invention
The invention solves the problem that the existing pressure detection mode is easy to misjudge.
In order to solve the above problems, the present invention provides a method for determining a refrigerant recovery completion condition, which can accurately determine whether a refrigerant is completely recovered.
The embodiment of the invention provides a method for judging the completion condition of refrigerant recovery, which is applied to an air conditioner and comprises the following steps:
acquiring indoor environment temperature, and determining a first judgment condition and a second judgment condition according to the indoor environment temperature;
acquiring the initial weight of an outdoor unit before the start of refrigerant recovery, and determining a third judgment condition according to the initial weight;
acquiring an initial air outlet temperature of the indoor unit at the beginning of refrigerant recovery and a real-time air outlet temperature in the refrigerant recovery process;
under the condition that the indoor environment temperature, the initial air outlet temperature and the real-time air outlet temperature meet the first judgment condition, controlling the indoor unit to reduce the wind gear rotating speed;
acquiring the real-time weight of the outdoor unit under the condition that the real-time outlet air temperature before and after the reduction of the wind gear rotating speed meets the second judgment condition;
and under the condition that the real-time weight and the initial weight meet the third judgment condition, judging that the refrigerant recovery is finished.
According to the method for judging the completion condition of refrigerant recovery provided by the embodiment of the invention, the first judgment condition and the second judgment condition are determined according to the indoor environment temperature, the third judgment condition is determined according to the initial weight of the outdoor unit before and after the refrigerant recovery starts, and the refrigerant in the indoor unit is judged to be completely recovered into the outdoor unit under the condition that a plurality of parameters before and after the refrigerant recovery starts meet the three judgment conditions, namely, the refrigerant recovery is judged to be completed. Therefore, the method for judging the refrigerant recovery completion condition provided by the embodiment judges the refrigerant recovery completion condition by judging multiple conditions of multiple parameters before and after the refrigerant recovery under different working conditions, and compared with the prior art which judges through a single pressure change condition, the judgment result is more accurate and reliable.
In an optional embodiment, the step of acquiring an indoor ambient temperature and determining a first determination condition and a second determination condition according to the indoor ambient temperature includes:
acquiring the indoor environment temperature;
comparing the indoor environment temperature with a plurality of preset temperature intervals;
selecting the first determination condition and the second determination condition corresponding to the temperature interval in which the indoor environment temperature is located.
In an optional embodiment, the step of obtaining an initial weight of the outdoor unit before refrigerant recovery starts and determining a third determination condition according to the initial weight includes:
acquiring the initial weight of the outdoor unit before the refrigerant recovery starts;
comparing the initial weight with a plurality of preset weight intervals;
selecting the third determination condition corresponding to the weight interval in which the initial weight is located.
In an optional embodiment, the step of controlling the indoor unit to reduce the wind gear speed when the indoor environment temperature, the initial wind outlet temperature, and the real-time wind outlet temperature satisfy the first determination condition includes:
and if the value obtained by subtracting the initial air-out temperature from the real-time air-out temperature is greater than or equal to a first preset value, and the value obtained by subtracting the real-time air-out temperature from the indoor environment temperature is less than or equal to a second preset value, controlling the indoor unit to reduce the wind gear rotating speed.
In an optional embodiment, the step of obtaining the real-time weight of the outdoor unit when the real-time outlet air temperature before and after the reduction of the wind shield rotation speed satisfies the second determination condition includes:
and if the value obtained by subtracting the real-time air outlet temperature after the reduction of the wind shield rotating speed from the real-time air outlet temperature before the reduction of the wind shield rotating speed is less than or equal to a third preset value, acquiring the real-time weight of the outdoor unit.
In an optional embodiment, the determining that the refrigerant recovery is completed when the real-time weight and the initial weight satisfy the third determination condition includes:
and if the ratio of the value obtained by subtracting the initial weight from the real-time weight to the initial weight is less than or equal to a fourth preset value, judging that the refrigerant recovery is finished.
The embodiment of the invention also provides a device for judging the completion condition of refrigerant recovery, which is applied to an air conditioner, and the device comprises:
the system comprises an acquisition module, a judgment module and a control module, wherein the acquisition module is used for acquiring the indoor environment temperature and determining a first judgment condition and a second judgment condition according to the indoor environment temperature; the acquisition module is further used for acquiring the initial weight of the outdoor unit before the refrigerant recovery starts and determining a third judgment condition according to the initial weight; the acquisition module is also used for acquiring the initial air outlet temperature of the indoor unit at the beginning of refrigerant recovery and the real-time air outlet temperature in the refrigerant recovery process;
the control module is used for controlling the indoor unit to reduce the wind gear rotating speed under the condition that the indoor environment temperature, the initial air outlet temperature and the real-time air outlet temperature meet the first judgment condition;
the acquiring module is further configured to acquire a real-time weight of the outdoor unit when the real-time outlet air temperature before and after the reduction of the wind shield rotation speed meets the second determination condition;
and the judging module is used for judging that the refrigerant recovery is finished under the condition that the real-time weight and the initial weight meet the third judging condition.
The device for judging the completion of refrigerant recovery provided by the embodiment of the invention determines the first judgment condition and the second judgment condition according to the indoor environment temperature, determines the third judgment condition according to the initial weight of the outdoor unit before and after the refrigerant recovery starts, and judges that the refrigerant in the indoor unit is completely recovered into the outdoor unit, namely, the refrigerant recovery is completed under the condition that a plurality of parameters before and after the refrigerant recovery starts meet the three judgment conditions. It can be seen that, the device for determining the refrigerant recovery completion condition provided by this embodiment determines the refrigerant recovery completion condition by performing multi-condition determination on a plurality of parameters before and after the refrigerant recovery under different working conditions, and compared with the prior art that determination is performed by a single pressure change condition, the determination result is more accurate and reliable.
In an alternative embodiment, the first determination condition includes:
and the value obtained by subtracting the initial air outlet temperature from the real-time air outlet temperature is greater than or equal to a first preset value, and the value obtained by subtracting the real-time air outlet temperature from the indoor environment temperature is less than or equal to a second preset value.
In an alternative embodiment, the second determination condition includes:
and the value obtained by subtracting the real-time air outlet temperature after the reduction of the wind gear rotating speed from the real-time air outlet temperature before the reduction of the wind gear rotating speed is less than or equal to a third preset value.
In an alternative embodiment, the third determination condition includes:
the ratio of the real-time weight minus the initial weight to the initial weight is less than or equal to a fourth preset value.
An embodiment of the present invention further provides an air conditioner, including a controller, where the controller is configured to execute the determining method, where the determining method includes: acquiring indoor environment temperature, and determining a first judgment condition and a second judgment condition according to the indoor environment temperature; acquiring the initial weight of an outdoor unit before the start of refrigerant recovery, and determining a third judgment condition according to the initial weight; acquiring an initial air outlet temperature of the indoor unit at the beginning of refrigerant recovery and a real-time air outlet temperature in the refrigerant recovery process; under the condition that the indoor environment temperature, the initial air outlet temperature and the real-time air outlet temperature meet the first judgment condition, controlling the indoor unit to reduce the wind gear rotating speed; acquiring the real-time weight of the outdoor unit under the condition that the real-time outlet air temperature before and after the reduction of the wind gear rotating speed meets the second judgment condition; and under the condition that the real-time weight and the initial weight meet the third judgment condition, judging that the refrigerant recovery is finished.
In the air conditioner provided by the embodiment of the invention, the first judgment condition and the second judgment condition are determined according to the indoor environment temperature, the third judgment condition is determined according to the initial weight of the outdoor unit before and after the refrigerant recovery starts, and the refrigerant in the indoor unit is judged to be completely recovered into the outdoor unit under the condition that a plurality of parameters before and after the refrigerant recovery starts meet the three judgment conditions, namely the refrigerant recovery is judged to be finished. Therefore, the air conditioner provided by the embodiment judges the completion condition of refrigerant recovery by judging the multiple conditions of multiple parameters before and after refrigerant recovery under different working conditions, and compared with the prior art, the judgment result is more accurate and reliable by judging the single pressure change condition.
Drawings
Fig. 1 is a flow chart of a method for determining a refrigerant recovery completion condition according to an embodiment of the present invention;
FIG. 2 is a block diagram of a sub-step of step S101 in FIG. 1;
FIG. 3 is a block diagram of a sub-step of step S102 in FIG. 1;
FIG. 4 is a block diagram of a sub-step of step S104 in FIG. 1;
FIG. 5 is a block diagram of a sub-step of step S105 in FIG. 1;
FIG. 6 is a block diagram of a sub-step of step S106 in FIG. 1;
fig. 7 is a block diagram of a structure of a device for determining completion of refrigerant recovery according to an embodiment of the present invention.
Description of reference numerals:
100-a judgment device for the completion condition of refrigerant recovery; 110-an obtaining module; 120-a control module; 130-decision module.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, fig. 1 is a flow chart illustrating a method for determining a refrigerant recycling completion condition according to the present embodiment. According to the method for judging the completion condition of refrigerant recovery, the completion condition of refrigerant recovery is judged by judging multiple conditions of multiple parameters before and after refrigerant recovery under different working conditions, and compared with the prior art that judgment is carried out through a single pressure change condition, the judgment result is more accurate and reliable. The method for determining the completion condition of refrigerant recovery provided by the embodiment comprises the following steps:
step S101, acquiring an indoor environment temperature, and determining a first determination condition and a second determination condition according to the indoor environment temperature.
Referring to fig. 2, fig. 2 is a block diagram illustrating a sub-step flow of step S101, wherein step S101 may include:
in sub-step S1011, the indoor ambient temperature is acquired.
In this embodiment, a temperature sensing bulb is installed on an indoor unit of an air conditioner to detect an indoor ambient temperature.
In the substep S1012, the indoor ambient temperature is compared with a plurality of preset temperature intervals.
In this embodiment, the preset temperature interval includes: at [50 ℃ C., + ∞), [40 ℃ C., [50 ℃ C.), [30 ℃ C., [40 ℃ C.), and [20 ℃ C., [30 ℃ C.).
In sub-step S1013, a first determination condition and a second determination condition corresponding to a temperature interval in which the indoor ambient temperature is located are selected.
In this embodiment, the first determination condition and the second determination condition corresponding to each temperature interval are as follows:
in the table, the initial outlet air temperature refers to the outlet air temperature of the indoor unit at the start of refrigerant recovery, and the real-time outlet air temperature refers to the real-time outlet air temperature of the indoor unit during the refrigerant recovery process.
For example, when the detected indoor ambient temperature is within the [20 ℃, 30 ℃) interval, the first determination condition is selected as: the value obtained by subtracting the initial air outlet temperature from the real-time air outlet temperature of the indoor unit is greater than or equal to 2, and the value obtained by subtracting the real-time air outlet temperature from the indoor environment temperature is less than or equal to 1. The second judgment condition is selected as follows: and the value obtained by subtracting the real-time air outlet temperature after the reduction of the wind gear rotating speed from the real-time air outlet temperature before the reduction of the wind gear rotating speed is less than or equal to 4.
It can be understood that the process of recovering the air conditioner refrigerant is as follows: when the air conditioner operates in a refrigeration mode, a fan of the outdoor heat exchanger is turned on, the liquid side stop valve is closed, and the refrigerant in the indoor heat exchanger and in the connecting pipeline of the indoor heat exchanger is compressed and discharged into the outdoor heat exchanger by the compressor. The air conditioner runs at different ambient temperatures, the load of the air conditioner is different, and the air outlet temperature of the air conditioner is also different. The higher the ambient temperature is, the higher the outlet air temperature is, so that the first judgment condition and the second judgment condition corresponding to the temperature interval of the indoor ambient temperature are selected, and the accuracy of the judgment result is ensured.
If in the refrigeration process, under the condition that a refrigerant circularly flows in the air conditioner system, the real-time air outlet temperature of the indoor unit is much lower than the indoor environment temperature, along with gradual recovery of the refrigerant, the refrigerant circulating in the system is less and less, the value obtained by subtracting the initial air outlet temperature from the real-time air outlet temperature of the indoor unit is larger and larger, and the value obtained by subtracting the real-time air outlet temperature from the indoor environment temperature is smaller and smaller, namely the real-time air outlet temperature is closer to the indoor environment temperature.
Referring to fig. 1, the determining method may further include:
step S102 is to obtain an initial weight of the outdoor unit before starting recovery of the refrigerant, and determine a third determination condition according to the initial weight.
Referring to fig. 3, fig. 3 is a block diagram illustrating a sub-step flow of step S102, where step S102 may include:
in the substep S1021, the initial weight of the outdoor unit before the start of refrigerant recovery is obtained.
In this embodiment, a weighing device is configured for the outdoor unit, and detection data of the weighing device before refrigerant recovery starts is acquired to obtain an initial weight of the outdoor unit.
In the substep S1022, the initial weight is compared with a plurality of preset weight intervals.
In this embodiment, the preset weight intervals include: (∞, 10 kg), (+ ∞, 20 kg), (. 20kg, 30 kg), (. 30kg, 40 kg) and (40 kg).
In the substep S1023, a third determination condition corresponding to the weight interval in which the initial weight is located is selected.
In this embodiment, the third determination condition corresponding to each weight interval is as follows:
in the table, the real-time weight refers to the real-time weight of the outdoor unit during the refrigerant recovery process.
For example, when the obtained initial weight is within the interval of (10kg, 20 kg), the third determination condition is selected such that the ratio of the real-time weight of the outdoor unit minus the initial weight to the initial weight is less than or equal to 1%.
Referring to fig. 1, the determining method may further include:
step S103, acquiring an initial air outlet temperature of the indoor unit at the start of refrigerant recovery and a real-time air outlet temperature during the refrigerant recovery.
In this embodiment, another thermal bulb is further installed on the indoor unit, and is configured to detect an indoor air outlet temperature, receive detection data of the thermal bulb before a refrigerant recovery starts to obtain an initial air outlet temperature, and receive the detection data of the thermal bulb in real time after the refrigerant recovery starts to obtain a real-time air outlet temperature.
Further, the determination method may further include:
and step S104, controlling the indoor unit to reduce the wind gear rotating speed under the condition that the indoor environment temperature, the initial air outlet temperature and the real-time air outlet temperature meet the first judgment condition.
Referring to fig. 4, fig. 4 is a block diagram illustrating a sub-step flow of step S104, where step S104 may include:
and in the substep S1041, if the value obtained by subtracting the initial outlet air temperature from the real-time outlet air temperature is greater than or equal to a first preset value and the value obtained by subtracting the real-time outlet air temperature from the indoor environment temperature is less than or equal to a second preset value, controlling the indoor unit to reduce the wind gear rotating speed.
In the case that the indoor ambient temperature is in different temperature intervals, the specific values of the first preset value and the second preset value are different, as shown in the foregoing table. If the indoor environment temperature is within the range of [50 ℃ and + ∞ ], the first preset value is 5, and the second preset value is 4; if the indoor environment temperature is in the range of [40 ℃, 50 ℃), the first preset value is 4, and the second preset value is 3; if the indoor environment temperature is in the range of [30 ℃, 40 ℃), the first preset value is 3, and the second preset value is 2; if the indoor environment temperature is within the range of [20 ℃, 30 ℃), the first preset value is 2, and the second preset value is 1.
In the normal refrigeration process of the air conditioner, if the wind gear rotating speed of the indoor unit is reduced, the heat exchange quantity of the evaporator is reduced, and at the moment, the real-time air outlet temperature of the indoor unit is reduced.
Referring to fig. 1, the determining method may further include:
and step S105, acquiring the real-time weight of the outdoor unit under the condition that the real-time air outlet temperature before and after the reduction of the wind shield rotating speed meets a second judgment condition.
It should be noted that, in the process of obtaining the real-time weight of the outdoor unit, the refrigerant recovery process is still continuously performed.
Referring to fig. 5, fig. 5 is a block diagram illustrating a sub-step flow of step S105, wherein step S105 may include:
and in the substep S1051, if the value obtained by subtracting the real-time outlet air temperature after the reduction of the wind gear rotating speed from the real-time outlet air temperature before the reduction of the wind gear rotating speed is less than or equal to a third preset value, acquiring the real-time weight of the outdoor unit.
In the case that the indoor ambient temperature is in different temperature intervals, the specific numerical values of the third preset values are different, as shown in the foregoing table. If the indoor environment temperature is within the range of [50 ℃ and + ∞ ], the third preset value is 1; if the indoor environment temperature is in the range of [40 ℃, 50 ℃), the third preset value is 2; if the indoor environment temperature is in the range of [30 ℃, 40 ℃), the third preset value is 3; if the indoor environment temperature is in the range of [20 ℃, 30 ℃), the third preset value is 4.
Referring to fig. 1, the determining method may further include:
and step S106, judging that the refrigerant is completely recovered under the condition that the real-time weight and the initial weight meet a third judgment condition.
And under the condition that the real-time weight and the initial weight do not meet the third judgment condition, continuously recovering the refrigerant. And after judging that the refrigerant recovery is finished, controlling the refrigerant recovery to be finished.
Referring to fig. 6, fig. 6 is a block diagram illustrating a sub-step flow of step S106, where step S106 may include:
in the substep S1061, if the ratio of the value obtained by subtracting the initial weight from the real-time weight to the initial weight is less than or equal to the fourth preset value, it is determined that the refrigerant recovery is completed.
The specific values of the fourth preset values are different in the case of initial weights in different weight intervals, as indicated in the preceding table. The fourth preset value is 0.5% if the initial weight is within the range (- ∞, 10 kg), 1% if the initial weight is within the range (10kg, 20 kg), 1.5% if the initial weight is within the range (20kg, 30 kg), 2% if the initial weight is within the range (30kg, 40 kg), and 2.5% if the initial weight is within the range (40kg, + ∞).
Referring to fig. 7, fig. 7 is a block diagram illustrating a structure of a device 100 for determining a refrigerant recovery completion condition according to the present embodiment, in which the device for determining a refrigerant recovery completion condition determines a refrigerant recovery completion condition by multi-condition determination of multiple parameters before and after refrigerant recovery under different working conditions, and a determination result is more accurate and reliable compared with a determination result determined by a single pressure change condition in the prior art. The device 100 for determining the completion of refrigerant recovery according to this embodiment includes: an acquisition module 110, a control module 120, and a determination module 130.
An obtaining module 110, configured to obtain an indoor environment temperature, and determine a first determination condition and a second determination condition according to the indoor environment temperature; the obtaining module 110 is further configured to obtain an initial weight of the outdoor unit before starting refrigerant recovery, and determine a third determination condition according to the initial weight; the obtaining module 110 is further configured to obtain an initial air outlet temperature of the indoor unit at the beginning of refrigerant recovery and a real-time air outlet temperature in the refrigerant recovery process. It can be seen that the acquiring module 110 is used for executing the steps S101, S102, S103, S1011, S1012, S1013, S1021, S1022 and S1023 of the aforementioned method for determining the completion of refrigerant recovery.
The control module 120 is configured to control the indoor unit to reduce the wind gear rotation speed when the indoor environment temperature, the initial outlet air temperature, and the real-time outlet air temperature meet the first determination condition. The first determination condition includes: the value obtained by subtracting the initial air-out temperature from the real-time air-out temperature is greater than or equal to a first preset value, and the value obtained by subtracting the real-time air-out temperature from the indoor environment temperature is less than or equal to a second preset value.
As can be seen, the control module 120 is configured to execute the step S104 and the sub-step S1041 of the method for determining the refrigerant recycling completion status.
The obtaining module 110 is further configured to obtain a real-time weight of the outdoor unit when the real-time outlet air temperature before and after the reduction of the wind shield rotation speed meets a second determination condition. The second determination condition includes: and the value obtained by subtracting the real-time air outlet temperature after the reduction of the wind shield rotating speed from the real-time air outlet temperature before the reduction of the wind shield rotating speed is less than or equal to a third preset value.
As can be seen, the obtaining module 110 is further configured to execute step S105 and step S1051 of the method for determining the refrigerant recovery completion status.
The determining module 130 is configured to determine that the refrigerant recovery is completed when the real-time weight and the initial weight satisfy the third determination condition. The third determination condition includes: the ratio of the real-time weight minus the initial weight to the initial weight is less than or equal to a fourth preset value.
The determination module 130 is used for executing the steps S106 and S1061 of the method for determining the completion of refrigerant recovery.
The present embodiment further provides an air conditioner, which includes a controller, wherein the controller is configured to execute the method for determining the completion of refrigerant recovery in steps S101 to S106, and the sub-steps corresponding to the steps. Therefore, the air conditioner provided by the embodiment judges the completion condition of refrigerant recovery by judging the multiple conditions of multiple parameters before and after refrigerant recovery under different working conditions, and compared with the prior art, the judgment result is more accurate and reliable by judging the single pressure change condition.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A method for judging the completion condition of refrigerant recovery is applied to an air conditioner, and is characterized by comprising the following steps:
acquiring indoor environment temperature, and determining a first judgment condition and a second judgment condition according to the indoor environment temperature;
acquiring the initial weight of an outdoor unit before the start of refrigerant recovery, and determining a third judgment condition according to the initial weight;
acquiring an initial air outlet temperature of the indoor unit at the beginning of refrigerant recovery and a real-time air outlet temperature in the refrigerant recovery process;
under the condition that the indoor environment temperature, the initial air outlet temperature and the real-time air outlet temperature meet the first judgment condition, controlling the indoor unit to reduce the wind gear rotating speed;
acquiring the real-time weight of the outdoor unit under the condition that the real-time outlet air temperature before and after the reduction of the wind gear rotating speed meets the second judgment condition;
under the condition that the real-time weight and the initial weight meet the third judgment condition, judging that the refrigerant recovery is finished;
the step of controlling the indoor unit to reduce the wind gear rotating speed under the condition that the indoor environment temperature, the initial air-out temperature and the real-time air-out temperature meet the first judgment condition comprises the following steps:
and if the value obtained by subtracting the initial air-out temperature from the real-time air-out temperature is greater than or equal to a first preset value, and the value obtained by subtracting the real-time air-out temperature from the indoor environment temperature is less than or equal to a second preset value, controlling the indoor unit to reduce the wind gear rotating speed.
2. The method for determining completion of refrigerant recovery according to claim 1, wherein the step of obtaining an indoor ambient temperature and determining the first determination condition and the second determination condition according to the indoor ambient temperature includes:
acquiring the indoor environment temperature;
comparing the indoor environment temperature with a plurality of preset temperature intervals;
selecting the first determination condition and the second determination condition corresponding to the temperature interval in which the indoor environment temperature is located.
3. The method for determining whether refrigerant recovery is complete according to claim 1, wherein the step of obtaining an initial weight of the outdoor unit before refrigerant recovery starts and determining a third determination condition according to the initial weight comprises:
acquiring the initial weight of the outdoor unit before the refrigerant recovery starts;
comparing the initial weight with a plurality of preset weight intervals;
selecting the third determination condition corresponding to the weight interval in which the initial weight is located.
4. The method for determining whether refrigerant recovery is complete according to claim 1, wherein the step of obtaining the real-time weight of the outdoor unit when the real-time outlet air temperature before and after the reduction of the damper rotation speed satisfies the second determination condition comprises:
and if the value obtained by subtracting the real-time air outlet temperature after the reduction of the wind shield rotating speed from the real-time air outlet temperature before the reduction of the wind shield rotating speed is less than or equal to a third preset value, acquiring the real-time weight of the outdoor unit.
5. The method for determining completion of refrigerant recovery according to claim 1, wherein the step of determining completion of refrigerant recovery when the real-time weight and the initial weight satisfy the third determination condition includes:
and if the ratio of the value obtained by subtracting the initial weight from the real-time weight to the initial weight is less than or equal to a fourth preset value, judging that the refrigerant recovery is finished.
6. The device for judging the completion of refrigerant recovery is applied to an air conditioner, and is characterized in that the device (100) for judging the completion of refrigerant recovery comprises:
the device comprises an acquisition module (110) for acquiring the indoor environment temperature and determining a first judgment condition and a second judgment condition according to the indoor environment temperature; the acquisition module is further used for acquiring the initial weight of the outdoor unit before the refrigerant recovery starts and determining a third judgment condition according to the initial weight; the acquisition module is also used for acquiring the initial air outlet temperature of the indoor unit at the beginning of refrigerant recovery and the real-time air outlet temperature in the refrigerant recovery process;
a control module (120) configured to control the indoor unit to reduce a wind gear rotation speed when the indoor environment temperature, the initial air-out temperature, and the real-time air-out temperature meet the first determination condition, where the first determination condition includes: the value obtained by subtracting the initial outlet air temperature from the real-time outlet air temperature is greater than or equal to a first preset value, and the value obtained by subtracting the real-time outlet air temperature from the indoor environment temperature is less than or equal to a second preset value;
the obtaining module (110) is further configured to obtain a real-time weight of the outdoor unit when the real-time outlet air temperature before and after the reduction of the wind shield rotation speed meets the second determination condition;
and the judging module (130) is used for judging that the refrigerant recovery is finished under the condition that the real-time weight and the initial weight meet the third judging condition.
7. The apparatus for determining completion of refrigerant recovery according to claim 6, wherein the second determination condition includes:
and the value obtained by subtracting the real-time air outlet temperature after the reduction of the wind gear rotating speed from the real-time air outlet temperature before the reduction of the wind gear rotating speed is less than or equal to a third preset value.
8. The apparatus for determining completion of refrigerant recovery according to claim 6, wherein the third determination condition includes:
the ratio of the real-time weight minus the initial weight to the initial weight is less than or equal to a fourth preset value.
9. An air conditioner characterized by comprising a controller for executing the judgment method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110778302.1A CN113432237B (en) | 2021-07-09 | 2021-07-09 | Method and device for judging refrigerant recovery completion condition and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110778302.1A CN113432237B (en) | 2021-07-09 | 2021-07-09 | Method and device for judging refrigerant recovery completion condition and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113432237A CN113432237A (en) | 2021-09-24 |
| CN113432237B true CN113432237B (en) | 2022-04-19 |
Family
ID=77759983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110778302.1A Active CN113432237B (en) | 2021-07-09 | 2021-07-09 | Method and device for judging refrigerant recovery completion condition and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113432237B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115930397B (en) * | 2022-11-21 | 2024-09-24 | 珠海格力电器股份有限公司 | Refrigerant recovery control method and device and air conditioner |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001133056A (en) * | 1999-11-04 | 2001-05-18 | Mitsubishi Electric Corp | Air conditioner |
| CN104236184B (en) * | 2013-06-17 | 2016-06-01 | 海尔集团公司 | A kind of air-conditioner coolant reclaims detection method |
| CN104019525B (en) * | 2014-06-24 | 2017-01-04 | 广东美的暖通设备有限公司 | The recovery method of air-conditioner coolant and recovery system |
| CN108917243A (en) * | 2018-08-22 | 2018-11-30 | 珠海格力电器股份有限公司 | Intelligent air conditioner refrigerant recovery method and system |
| CN110940049B (en) * | 2018-09-21 | 2021-07-02 | 奥克斯空调股份有限公司 | Refrigerant leakage detection method and air conditioning device |
| CN110454905B (en) * | 2019-08-05 | 2022-03-25 | 广东美的制冷设备有限公司 | Control method and device of air conditioner, air conditioner and electronic equipment |
| CN111207504A (en) * | 2020-01-13 | 2020-05-29 | 珠海格力电器股份有限公司 | Air conditioning system and refrigerant recovery control method |
| CN111121154B (en) * | 2020-01-20 | 2021-06-08 | 青岛海信日立空调系统有限公司 | Multi-connected air conditioner |
-
2021
- 2021-07-09 CN CN202110778302.1A patent/CN113432237B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113432237A (en) | 2021-09-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022160672A1 (en) | Method and apparatus for measuring amount of refrigerant in refrigeration system, and air conditioner | |
| US10941956B2 (en) | Data processing method, refrigerant leakage detection method, system failure detection method and system performance detection method | |
| CN113432237B (en) | Method and device for judging refrigerant recovery completion condition and air conditioner | |
| CN105674507A (en) | Method and device for detecting refrigerants of air conditioner | |
| CN111271836A (en) | Control method and device, air conditioner and computer readable storage medium | |
| EP1643193B1 (en) | Method of determining the configuration of an air conditioning system | |
| CN111023472A (en) | Air conditioner detection method and device | |
| US20240142125A1 (en) | Air conditioning system, abnormality estimation method for air conditioning system, air conditioner, and abnormality estimation method for air conditioner | |
| CN113075471A (en) | Performance test method and device for outdoor unit of air conditioner | |
| KR20070017269A (en) | Pipe inspection operation and method of Multi air conditioner | |
| CN115950045A (en) | Multi-split air conditioning system and control method | |
| CN109869868A (en) | Air conditioner multi-split air conditioner refrigerant shortage detection method and device and air conditioner | |
| CN113557397B (en) | Refrigerant amount estimation device, method, and program | |
| JP2001289480A (en) | Multi-room air conditioner | |
| CN113280470B (en) | Four-way valve fault detection method and device and air conditioner | |
| CN110553366A (en) | Self-adaptive control method and device of air conditioner and air conditioner | |
| CN111002785A (en) | Automobile air conditioner diagnosis method and system and storage medium | |
| CN107894068B (en) | Air conditioner running state adjusting method and device | |
| WO2022024660A1 (en) | Air conditioner | |
| CN114459119B (en) | Air conditioner blockage detection method, device, equipment and storage medium | |
| CN112833597A (en) | Exhaust side parameter-based refrigerant quantity detection control method for multi-split air conditioning system | |
| CN110926544B (en) | Detection equipment for heat exchanger unit and online automatic detection method thereof | |
| CN113007864A (en) | Detection method and device for air conditioner outdoor unit | |
| CN115406089A (en) | Pressure difference detection method of compressor, air conditioner and computer readable storage medium | |
| WO2022209444A1 (en) | Air-conditioning system, refrigerant amount estimation method for air-conditioning system, air conditioner, and refrigerant amount estimation method for air conditioner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |